The modern edition of the iconic Volkswagen model is set to cease production Wednesday, but people in Cuautepec on the outskirts of Mexico City still rely on the original no-frills version, praising it for its affordability, reparability and, most of all, its dexterity at handling the district’s steep streets.

CHICAGO—Nearly one-quarter of Americans say they never plan to retire, according to a poll that suggests a disconnection between individuals' retirement plans and the realities of aging in the workforce.